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| PartNumber | PCA9538D112 | PCA9538D118 | PCA9538D |
| Description | I2C Bus and SMBus Low Power I/O Port 16-Pin SO Tube - Rail/Tube (Alt: PCA9538D,112) | I2C Bus and SMBus Low Power I/O Port 16-Pin SO T/R - Bulk (Alt: PCA9538D118) | 8-BIT I2C I/O EXPANDER INTER./RESET SO16, PK |